for marijuana possession. legal marijuana sales could also generate washington $500 million a year in taxes and business. opponents worry legalization will lead to more people using drugs. >> this is not what you're going to pick up in a baggy at the corner. >> absolutely not. it's the complete opposite. >> reporter: jamen shively, a former microsoft executive, has plans for up-market marijuana shops. >> we're positioning premium marijuana, very similar to a fine cognac, a fine cigar, something to be safeord, something to be consumed in moderation by responsible adults. >> reporter: new stores would be modeled after those in many states it for alcohol. by next month, a similar law will go into effect in colorado, where residents will be allowed to grow their own marijuana. but all those plans could go up in smoke because of federal w. the justice department said it's studying the situation here in washington, but, scott, want feds have already warned residents of this state, under federal law all marijuana use remains illegal. >> pelley: plenty of room for confusion. thanks very much, john.